Smoke consumer



Feb. 22, 1927.

F. D HOFFMAN SMOKE CONSUMER Filed oct. 1o, 192s 1 ZZ Z4 K 'Z yf ,q 14 ,X

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ATTORNEY Patented Feb. 22, 1927.

UNITED STATES PATENT OFFICE.

FRED n. HOFFMAN, OE KANSAS CITYQMissoUEr, AssicNOi-tro HOFFMAN sMoKE ABATOE COMPANY, oEJACKsoN COUNTY, -MIssoUn-r, a COMMON-LAW TRUST.

SMOKE CONSUMER.

Application led October 10,1925. Serial No. 61,765.

My invention relates to smoke consumers, and more particularly to apparatus of that character for interrupting flow of'unburned carbonaceous particles from a furnace to its stack and returning said particles to the furnace for combustion therein, the principal Object of the present invention being toV effectively collect the carbonaceous particles before they reach the stack and return them to the furnace for consumption.

In accomplishing this object I have pro vided improved details of structure, the preferred forms of which are illustrated in the accompanying drawings wherein Fig. 1 is a perspective view of -a furnace and its stack equipped with 'a smoke consumer embodying my improvements. Y

. Fig. 2 is a vertical section on the line 2 2,

Fig. l.

Fig. 3 is a detail perspective view of the return spreader plate.

Referring more in detail to the drawings, 1 designates a' furnace of any ordinaryj type, and 2 a stack of usual construction.

Located between thefurnace and its stack. is a battery of housings V3, each substantially Y a duplicate of the other and comprising a box-like structure open at its front and provided with a door 4 hinged to the housing andpreferably adapted for closure Vby bolts 5 proj ectable through apertures 6 in the door 4 and for receiving wing nuts7;

Integral with the rear wall of the housing is a partition8 which extendsforwardly to the line of the front of the housing to divide the housing into separate vertical chambers,

the upper end of the partitionbeing.inclined rearwardly to form an enlarged chamber 9V Vat the front upper corner of the housing, and the lower end of the partition being curved rearwardly and spaced from the rear edge wall of the housing to provide for easy flow from the front chamber to therearvoue at the bottom of the housing. Formedin-N vtegrally with the partition and 'f extending downwardly at an incline from the oppositel faces thereof are. forwardly directed baffle ears 10fand rearwardly directed baffle ears' 11, the rearwardly directed` ears being of greater number and more closely spacedy than those at the front of the partition. i

' Formedintegrally withthe'edge walls `of the Y' housing and' projecting at an incline therefrom inVV staggered relation with thej lbaiiies `10 and 11 are bales 12. and- '13.form" operable by a motor 1S and communicating through a conduit'19 with the stack 2.

Located adj acentthe tops of the housings is va water supply pipe 20vhaving branches 22, eachleading through they top of a'liousing to the chamber 9 thereof, and there provided with a downwardly directed Vnozzle 23 through which waterma'y be sprayed into the primary baille chamber. Located adjacent 'each ofthejhousings, and connected with the water supply pipe 20 'is a branch 24 that extends throughout the length of the housing and has otakesV V25 extending through the backpwall of the housing and provided with nozzles 26 which discharge horizontally between the baiies 11 in'said rear housing chamber.' Leading from the bottom "of eachof the housings is a 'pipe 27 Y connect-ing with a manifold 28' leadingfback to the furnace and terminating therein in a spreader plate 29."' 1`he manifold'128 1s provided witha drain pipe SO'through which contents of the housing maybe drawn off to wastewithout delivery to the furnace, if desired. y The manifold 2,8 has a valve 81 between the first housing and the furnace, and thev drain pipe 30, a valve 32, whereby flow from the manifold may be directed' to the furnace or to waste as desired. v

The battery ofhousings is preferably connected byati'e rod 33andlthe housings are housings. f

,spaced by lugs 34 preferably cast integrally Y Assuming the parts to be constructed and Y assembled as described, and thev furnace'in operation, the valve l31 in the manifold 28 is Vopened andthe valve 32 in the drainpipe 30 `closed to communicate the, manifold withV` the furnace.

` Non-combustible gases andA unconsumed fcarbonaceous particles of theefuel forming in 'the furnace are carried through the/flue 14 andrfdelivered into v.theuppe'rchamber'. 9`

`lio

`to the stack being promoted by the exhaust i'an heretofore mentioned.

Garbonaceous particles not precipitated by `the spray in the primary baille chamber into the secondary chamber and are carried about the bal'lles, where they encouriter sprays from the horizontal nozzles and are collected and passed bach to the bottoni i oflthe housing in rich solution, which, with the particles precipitated by the first spray, passes out through the drain pipe to the manifold and is conducted back to the i'ur nace. Then the solution reaches the hot spreader in the furnace the liquid content `of the solution is vaporized, an explosive effect result-ing from generation of the `steam tending to distribute the carbonaeeous particles so that they are spread into the tire and consumed. Carbonaceous particlcs not collected in the first housing pass on to the second one, where the operation described in connection with the first housing is repeated,` and all remaining carbons i returned to the furnace, so that by the time the fan is reached, the iiow consists only ot nonfcombustible gases.

After the furnace has been in operation for sometime, a considerable amount oit carbonaccous matter will have collected on the `baillcs and walls of the respective housings. T he valve 31 in the manifold is then closed, the valve 32 in the drain pipe 30 opened and the valves or the spray `nozzles opened wide to permit strong flushing sprays to be delivered through all of the nozzles which will dislodge the collected material from the walls and battles and carry it oli" to waste. After the cleaning operation the valves may be readjusted and the normal operation resumed.

lith an apparatus such as described and operated as above set liorth, the carbonaeeous matter passing ott' :Eronithe furnace Aen as a result oi incomplete combustion therein, is collected in the housings, so that it cannot escape through thcstaek as smoke, and is conducted baclt to the furnace to be burned,` thereby eiiccting conip'lete `co1nbustion of fuel.

That l claim and desire to secure by Letters-Patent is i l. In combination with a :furnace and its stack, a housing comprising a partition `dividingthe housing into separate vertical passageways having connnunffation with the bottoni of the housing, bullies in said passageways in staggered relation to iorni a tortuous path :for tlow therethroiugh, means connuunicating the furnace with the upper portion of the tiret passageway, and a nozzle Afor directing spray downwardly only in the a passageway adjacent the intake :iroin the furnace, and nozzles directed horizontallyY between the balilesin the rear passageway.

In combination with a. 'furnace and its stack, a housing buying its interior divided longitudinally to 'lorni iii'nward and rear passage -ays, the partition terminating short oil?I the bottoni oil the housing com inunicating the p; Leagewaye and curved rearwardly to direct the :liow to the rear passagcway, niieans oi eoninnuiieation between the furnace and the upper portion of the i'orward passageway, bullies in said pasaage ways arranged in stiegerrml relation to 'torni a tortuous path, a nozzle directed downwardly in the top of the forward passageway, nozzles directed horizontally between the baillesin the rear passageway, and means for draining contents of' the housing bael to the furnace.

3. In combination with a furnace and its stack, a housing having its interior divided into forward` and rearward passagesways eoinn'iunicating at the bottom of the hous ing, ba'llles inclined downwardly from opposito sides oi' the passageway in staggered relation to forni a tortuous path, the `housing having an intake port at the upper end` ot the forward passageway and anoutlet port at t-he upper end oi. the rear passageway, a flue connecting the furnace with the intake port, an exhaust :tan`cmnn'iunicating with the outlet port and with the stelt, avnozzle directed downwardly in the top of the toi ward passageway, nozzlesdireeted horizontally between the battles of the rear pa is` way, valyed means iorsupplying fluid to the nozzles, a drain pipe opening to the `bottoni oft' the housing and leading to the .interior of the furnace, and :i slineader on the outlet end of the pipe.

el. In combinationwith a furnace and its stack, a battery oit spaced housinggaeach having its interior divided longitudinally` into separate passageways, each oi the` housings having an intake portat the upper end of its forward passageway and an outlet port atthe rear ed gc et its rear passageway, means oi" eon'nnunication between rthe outlet port oi a forward housing and the .intake port of a rear housing, a tine connecting the furnace with the intake port oi the first housing in train, ane. iaust fan communieating with the outlet `port oi the rear housngin train, the edge walls` and partitions in each of the housingsbeing provided with 4staggered bailles forming a tortuous path within the housing, a nozzle directed `downlll() lli) Wardly into the upper portion of each of the housings adjacent the intake port, horizontal nozzles arranged for discharging betweenr the haflies in the rear passageway of each housing, drain pipes leading from the bottom of the housings, a manifold con'- neoted with the drain pipes and leading to v thev interior of the furnace, a spreader plate on the outlet end ofy the manifold, a drain pipe leading from the manifold, and means for selectively directing'flow from the mani- FRED D. HOFFMAN. 

